// -*- c-basic-offset: 8; indent-tabs-mode: t -*- // vim:ts=8:sw=8:noet:ai: /* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <inttypes.h> #include <string.h> #include <stdlib.h> #include "mp_msg.h" #include "ass.h" #include "ass_utils.h" #include "ass_mp.h" #include "ass_library.h" #ifdef HAVE_FONTCONFIG #include <fontconfig/fontconfig.h> #endif // libass-related command line options ass_library_t* ass_library; int ass_enabled = 0; float ass_font_scale = 1.; float ass_line_spacing = 0.; int ass_top_margin = 0; int ass_bottom_margin = 0; #if defined(FC_VERSION) && (FC_VERSION >= 20402) int extract_embedded_fonts = 1; #else int extract_embedded_fonts = 0; #endif char **ass_force_style_list = NULL; int ass_use_margins = 0; char* ass_color = NULL; char* ass_border_color = NULL; char* ass_styles_file = NULL; #ifdef HAVE_FONTCONFIG extern int font_fontconfig; #else static int font_fontconfig = 0; #endif extern char* font_name; extern float text_font_scale_factor; extern int subtitle_autoscale; #ifdef USE_ICONV extern char* sub_cp; #else static char* sub_cp = 0; #endif extern double ass_internal_font_size_coeff; extern void process_force_style(ass_track_t* track); ass_track_t* ass_default_track(ass_library_t* library) { ass_track_t* track = ass_new_track(library); track->track_type = TRACK_TYPE_ASS; track->Timer = 100.; track->PlayResY = 288; track->WrapStyle = 0; if (ass_styles_file) ass_read_styles(track, ass_styles_file, sub_cp); if (track->n_styles == 0) { ass_style_t* style; int sid; double fs; uint32_t c1, c2; sid = ass_alloc_style(track); style = track->styles + sid; style->Name = strdup("Default"); style->FontName = (font_fontconfig && font_name) ? strdup(font_name) : strdup("Sans"); fs = track->PlayResY * text_font_scale_factor / 100. / ass_internal_font_size_coeff; // approximate autoscale coefficients if (subtitle_autoscale == 2) fs *= 1.3; else if (subtitle_autoscale == 3) fs *= 1.4; style->FontSize = fs; if (ass_color) c1 = strtoll(ass_color, NULL, 16); else c1 = 0xFFFF0000; if (ass_border_color) c2 = strtoll(ass_border_color, NULL, 16); else c2 = 0x00000000; style->PrimaryColour = c1; style->SecondaryColour = c1; style->OutlineColour = c2; style->BackColour = 0x00000000; style->BorderStyle = 1; style->Alignment = 2; style->Outline = 2; style->MarginL = 10; style->MarginR = 10; style->MarginV = 5; style->ScaleX = 1.; style->ScaleY = 1.; } process_force_style(track); return track; } static int check_duplicate_plaintext_event(ass_track_t* track) { int i; ass_event_t* evt = track->events + track->n_events - 1; for (i = 0; i<track->n_events - 1; ++i) // ignoring last event, it is the one we are comparing with if (track->events[i].Start == evt->Start && track->events[i].Duration == evt->Duration && strcmp(track->events[i].Text, evt->Text) == 0) return 1; return 0; } /** * \brief Convert subtitle to ass_event_t for the given track * \param ass_track_t track * \param sub subtitle to convert * \return event id * note: assumes that subtitle is _not_ fps-based; caller must manually correct * Start and Duration in other case. **/ int ass_process_subtitle(ass_track_t* track, subtitle* sub) { int eid; ass_event_t* event; int len = 0, j; char* p; char* end; eid = ass_alloc_event(track); event = track->events + eid; event->Start = sub->start * 10; event->Duration = (sub->end - sub->start) * 10; event->Style = 0; for (j = 0; j < sub->lines; ++j) len += sub->text[j] ? strlen(sub->text[j]) : 0; len += 2 * sub->lines; // '\N', including the one after the last line len += 6; // {\anX} len += 1; // '\0' event->Text = malloc(len); end = event->Text + len; p = event->Text; if (sub->alignment) p += snprintf(p, end - p, "{\\an%d}", sub->alignment); for (j = 0; j < sub->lines; ++j) p += snprintf(p, end - p, "%s\\N", sub->text[j]); if (sub->lines > 0) p-=2; // remove last "\N" *p = 0; if (check_duplicate_plaintext_event(track)) { ass_free_event(track, eid); track->n_events--; return -1; } mp_msg(MSGT_ASS, MSGL_V, "plaintext event at %" PRId64 ", +%" PRId64 ": %s \n", (int64_t)event->Start, (int64_t)event->Duration, event->Text); return eid; } /** * \brief Convert subdata to ass_track * \param subdata subtitles struct from subreader * \param fps video framerate * \return newly allocated ass_track, filled with subtitles from subdata */ ass_track_t* ass_read_subdata(ass_library_t* library, sub_data* subdata, double fps) { ass_track_t* track; int i; track = ass_default_track(library); track->name = subdata->filename ? strdup(subdata->filename) : 0; for (i = 0; i < subdata->sub_num; ++i) { int eid = ass_process_subtitle(track, subdata->subtitles + i); if (eid < 0) continue; if (!subdata->sub_uses_time) { track->events[eid].Start *= 100. / fps; track->events[eid].Duration *= 100. / fps; } } return track; } char *get_path(char *); void ass_configure(ass_renderer_t* priv, int w, int h) { ass_set_frame_size(priv, w, h); ass_set_margins(priv, ass_top_margin, ass_bottom_margin, 0, 0); ass_set_use_margins(priv, ass_use_margins); ass_set_font_scale(priv, ass_font_scale); } void ass_configure_fonts(ass_renderer_t* priv) { char *dir, *path, *family; dir = get_path("fonts"); if (!font_fontconfig && font_name) path = strdup(font_name); else path = get_path("subfont.ttf"); if (font_fontconfig && font_name) family = strdup(font_name); else family = 0; ass_set_fonts(priv, path, family); free(dir); free(path); free(family); } ass_library_t* ass_init(void) { ass_library_t* priv; char* path = get_path("fonts"); priv = ass_library_init(); ass_set_fonts_dir(priv, path); ass_set_extract_fonts(priv, extract_embedded_fonts); ass_set_style_overrides(priv, ass_force_style_list); free(path); return priv; }